The Study of Reversible Data Hiding Based on Histogram Modification over Ternary Computers
碩士 === 國立高雄大學 === 資訊工程學系碩士班 === 100 === In this thesis, we propose a new data hiding method over ternary computers. We embed ternary secret data, NAF format, into cover image. According to the characteristics of NAF format, our method can reduce the number of shifted pixel values in embedded algori...
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| Format: | Others |
| Language: | en_US |
| Published: |
2012
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| Online Access: | http://ndltd.ncl.edu.tw/handle/01941589936037984992 |
| Summary: | 碩士 === 國立高雄大學 === 資訊工程學系碩士班 === 100 === In this thesis, we propose a new data hiding method over ternary computers. We embed ternary secret data, NAF format, into cover image. According to the characteristics of NAF format, our method can reduce the number of shifted pixel values in embedded algorithm. This implies that more pixels are unchanged and keep higher PSNR of stego-image. According to experiment results and analysis, our method can reduce the number of shifted values by 33% and gain 1.76 higher PSNR in best case as compared with Yang et al.’s method.
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